body{
    margin: 0;
    padding: 0;
    background-image: linear-gradient(135deg, #fdfcfb 0%, #e2d1c3 100%);
}
.main{
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100vw;
    height: 100vh;
}
#pic_file{
    display: none;
}
#upload{
    width: 20vh;
    height: 5vh;
    color: #ffffff;
    font-size: 1em;
    font-weight: bold;
    background: #2f3542;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    line-height: 5vh;
}
#upload:hover{
    background: #57606f;
    color: #ff4757;
}
#upload:visited{
    border: none;
}
section{
    display: flex;
    flex-direction: row;
    width: 70vh;
    justify-content: center;
    align-items: center;
    margin-top: 2vh;
}
#pic_show{
    width: 50vh;
    height: 30vh;
    border-radius: 10px;
    display: none;
}
#info{
    color: #ff7f50;
    font-size: 2em;
    font-weight: bold;
    text-transform: uppercase;
    cursor: pointer;
}
#info > span{
    position: relative;
    display: inline-block;
}
.changeColor{
    animation-name: changeColor;
    animation-duration: 1s;
    animation-direction: alternate;
    animation-iteration-count: 2;
    animation-timing-function: linear;
}
@keyframes changeColor{
    50%{
        color: #eccc68;
        transform: scale(1.5);
    }
    to{
        color: #ff4757;
        transform: scale(0.5);
    }
}
#shuoming{
    font-size: 1.5em;
    color: #ff4757;
}